Henny Penny OFG-391 Fryer Error Code E-15: Drain Switch
E-15 is a drain switch message. Close the drain with the drain valve handle. If E-15 still shows, call the Service Department.
Medium: the burner will not light until the drain switch reads closed, which is often a quick fix.
- Code
- E-15
- Maker
- Henny Penny
- Equipment
- Fryers
- Applies to
- Henny Penny OFG-391 open gas fryer
What does Henny Penny error code E-15 mean?
A gas fryer must not fire with the drain open, so a switch at the drain valve tells the controller whether the valve is closed. When the switch is open, the controller shows E-15. The manual's action is simple: close the drain with the drain valve handle, and if E-15 still shows, call the Service Department. The handle can sit slightly short of fully closed after filtering, and then the switch still reads open. It is also possible for the switch itself to be out of adjustment, or for grease to hold its lever. The manual names only the drain switch and gives the handle as the first step. The controller will not light the burner while E-15 shows, so the oil stays cold. Cooks see the fryer fail to heat after a filter cycle or a cleaning. Because the switch is a simple moving part at the drain valve, a quick look at the handle and a firm push to the closed position solves most cases, and a technician is needed only when the message stays with the handle fully closed.
Affected models and control systems
Henny Penny OFG-391 open gas fryer. The manual we used is a text viewer copy. E-15 relies on the drain switch at the drain valve.
Code numbers and their meaning can change between control generations. We match the full model and control before acting on a code.
What you may notice
- E-15 on the controller
- Fryer does not heat
- Drain handle not fully closed
- Message appears after filtering or cleaning
Possible causes
Likely causes — what usually sits behind error code E-15 on this control. A technician confirms which one it is before any part is replaced.
- Drain open or drain switch not made
- Handle resting short of the closed position
- Grease on the switch lever
- Switch bracket bent out of line
Safe checks before calling for service
- Push the drain valve handle firmly to the closed position.
- Wipe grease from the handle area when it is cool.
- Wait a few seconds and see if E-15 clears.
- If it stays, call us.
How a technician diagnoses error code E-15
- Read the code and confirm E-15.
- Check the drain valve handle position.
- Check the switch actuation and bracket.
- Test the switch with a meter.
- Replace the switch or correct the wiring.
- The drain switch wiring runs to the control at low voltage near gas controls.
- Adjusting the switch near hot oil needs care.
- A switch that reads open when closed needs a meter test.
How error code E-15 differs from similar codes
E-15 is the drain switch message; E-10 is the high limit.
Technical reference
- Document
- Henny Penny OFG-391 manual, Error Codes (Section 1-4 / 4-2)
- Maker documentation
- Henny Penny owner support
- Edition
- Not printed on the pages opened
- Models / control
- Henny Penny OFG-391 open gas fryer
- Section
- Error Codes, printed p.1-10
- Checked
- October 2026
We use the maker's document to read the code and do not reproduce it. Always confirm the complete model and control before applying these steps.
Related Henny Penny fryer error codes
Is the drain really open?
Check first. The handle may be short of fully closed.
Can I bypass the switch?
No. It prevents firing with the drain open.
When do I call?
If E-15 still shows after the handle is closed.
Need help with Henny Penny error code E-15?
A technician confirms the cause on site and gives you the price in writing before any work starts.